A new filtrered subgrid-scale model for large eddy simulation of indoor airflow

Large Eddy Simulation (LES) with a Dynamic Subgrid-scale Model (DSM) is a powerful tool to predict indoor airflow. However, the model needs to average the model coefficient over a homogeneous direction. Since most indoor airflow does not have a homogeneous direction, this study proposed a new Filtered Dynamic Subgrid-scale Model (FDSM) without the need of a homogeneous flow direction. The predicted air velocity, air temperature and turbulence distributions agree reasonably well with the experimental data. The results show that the FDSM can be used to simulate indoor airflow.